<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
<title></title>
</head>
<body onLoad="drop()">
<img src="1.jpg" width="557" height="176">
<script type="text/javascript">
    function drop() {
        var heig=window.screen.availHeight;
        if(window.moveBy){
            for(i = Math.floor(heig/1); i > 0; i--){
                window.moveBy(0,1);
            }
        }
    }
</script>
</body>

</html>
